Analysis of Hu-Huang-Fan practical hierarchical identity-Based encryption scheme

Jong Hwan Park; Dong Hoon Lee

doi:10.1587/transfun.E93.A.1269

Analysis of Hu-Huang-Fan practical hierarchical identity-Based encryption scheme

Jong Hwan Park, Dong Hoon Lee

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Recently, Hu et al. have suggested a fully secure hierarchical identity-based encryption (HIBE) scheme that achieves constant size ciphertext and tight security reduction. Their construction was based on Gentry's IBE scheme that supports their security proof. In this paper, we show that their security proof is incorrect. We point out the difference between Gentry's proof and that of Hu et al., and we show that the security of Hu et al.'s HIBE scheme cannot be reduced to their claimed complexity assumption.

Original language	English
Pages (from-to)	1269-1273
Number of pages	5
Journal	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Volume	E93-A
Issue number	6
DOIs	https://doi.org/10.1587/transfun.E93.A.1269
Publication status	Published - 2010 Jun

Keywords

Bilinear maps
Full security
Hierarchical identity-based encryption

ASJC Scopus subject areas

Signal Processing
Computer Graphics and Computer-Aided Design
Electrical and Electronic Engineering
Applied Mathematics

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10.1587/transfun.E93.A.1269

Cite this

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AB - Recently, Hu et al. have suggested a fully secure hierarchical identity-based encryption (HIBE) scheme that achieves constant size ciphertext and tight security reduction. Their construction was based on Gentry's IBE scheme that supports their security proof. In this paper, we show that their security proof is incorrect. We point out the difference between Gentry's proof and that of Hu et al., and we show that the security of Hu et al.'s HIBE scheme cannot be reduced to their claimed complexity assumption.

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Analysis of Hu-Huang-Fan practical hierarchical identity-Based encryption scheme

Abstract

Keywords

ASJC Scopus subject areas

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